biology chapter1

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Across
  1. 3. a negative charged particle
  2. 5. 2 or more atoms together by chemicals
  3. 7. a reaction to chemicals on your body.
  4. 10. its in the middle of a plant cell.
  5. 12. organism that the cells have a nucleus,
  6. 13. atom with same number of proton not nuetrons
  7. 14. facts and statistics collected together.
  8. 15. molecule that has a bunch of monomers.
  9. 17. a scientific study of life
  10. 19. when a animal gets used to its enviorment.
  11. 20. what everything is made up of
Down
  1. 1. a possible answer to a scientific
  2. 2. occurring over and over in a time period
  3. 4. a short microscopic hair like vibrating structure.
  4. 6. a liquid that can desolve a unit.
  5. 8. a wall that protects the cell.
  6. 9. what we breath
  7. 11. there is a animal and plant version of it.
  8. 15. an item for sale
  9. 16. chicken and steak
  10. 18. an atom or molecule with a negative or positive charge